Viessmann Vitocal 222-S Installation And Service Instructions For Contractors page 103

Hydraulics, indoor unit
Pos. Part
0001 Hydraulic block
0002 Diaphragm expansion vessel 10 l
0003 High efficiency circulation pump with PWM control
0004 Safety valve 3 bar (0.3 MPa)
0005 Servomotor, 3-way diverter valve
0006 Drain hose safety valve
0007 Pressure gauge
0008 Valve insert, 3-way diverter valve
0009 Connection pipe, diaphragm expansion vessel
0010 Quick-action air vent valve G
0011 Secondary circuit return line
0012 DHW cylinder flow line
0013 Heating water flow line
0014 Line from circulation pump
0015 Plug for instantaneous heating water heater
0016 Air vent valve G
0017 Gasket for instantaneous heating water heater/plug
0018 O-ring 28.0 x 2.5 mm
0019 Gasket A 35 x 45 x 2 mm
0020 Gasket A 10 x 15 x 1.5 mm (5 pce)
0021 Gaskets and O-rings (set)
0022 Spring clip 25 mm
7
0023 Spring clip 28 mm
7
0024 Clip 18 mm (5 pce)
7
0025 Clip 10 mm
7
0026 Hydraulic block screws (set)
0027 Flow switch
(cont.)
⅜
plate heat exchanger
—
⅜
Indoor unit parts lists
103